Functions of the circulatory system
Heart structure & Chambers
Blood Vessels
Oxygenated vs. deoxygenated
Heart & pathway flow
100

This is NOT a function of the circulatory system: carrying oxygen, carrying nutrients, removing solid waste, or protecting you from disease. 

carrying oxygen, carrying nutrients, removing solid waste, or protecting you from disease.

100

These two upper chambers receive blood entering the heart.

What are the atria?

100

These vessels carry blood away from the heart.

What are arteries?

100

Blood in the left side of the heart is mostly this type.

What is oxygenated blood?

100

This chamber receives blood from the body.

What is the right atrium?

200

The circulatory system brings these essential materials directly to your cells.

What are oxygen and nutrients?

200

These two lower chambers pump blood out of the heart.

What are the ventricles?


200

These vessels carry blood toward the heart.

What are veins?

200

Blood returning from the body enters the heart through these vessels.

What are the superior and inferior vena cava?

200

This term describes the heart acting as two pumps — one to the lungs, one to the body.

What is the double-pump system?

300

 These three major parts make up the circulatory system. 

 What are the heart, blood, and blood vessels? 

300

This side of the heart has thicker muscle because it pumps blood to the entire body.

What is the left side?

300

Veins have this special feature to prevent backflow.

What are valves?

300

The right side of the heart pumps this type of blood.

What is deoxygenated blood?

300

The pulmonary artery goes from the heart to this organ.

What is the lung?

400

The heart beats faster during exercise because the body needs more of this.

What is oxygen?

400

These structures prevent blood from flowing backward.

What are valves?

400

This is the body’s largest artery.

What is the aorta?

400

Air entering the lungs is this type before gaining oxygen.

What is deoxygenated?

400

A pulse is caused by the rhythmic pumping of this organ.

What is the heart?

500

This type of blood cells in the circulatory system help fight bacteria, viruses, and other pathogens. 

What are white blood cells?

500

The heart does not have three chambers. How many does it have?

What is four?

500

The pulmonary artery carries this type of blood.

What is deoxygenated blood?

500

These vessels carry oxygenated blood from the lungs to the heart.

What are pulmonary veins?

500

If Sophie counts 10 beats in 10 seconds, her heart rate per minute is this.

What is 60 bpm?

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